White Albertina

Albertina is the princess set to marry prince Christ. She exchanges identities with her maid, who is also named Albertina, before arriving at Christ's castle, and is relegated to looking after the geese. She is the one who wrote letters and poems to prince Christ, who calls her "White Albertina" because of her nicer personality.

[Spoiler] At the end of the chapter it is revealed that she actually is the maid, as well as the sorceress's daughter, and that she has magical powers of her own. [/Spoiler]